Demystifying evals for AI agents

Demystifying evals for AI agents

Demystifying evals for AI agents

Original URL: https://www.anthropic.com/engineering/building-effective-agents

Article Written: January 9, 2026

Added: March 17, 2026

Type: tech1

Summary

The article discusses the complexities of evaluating AI agents, emphasizing the importance of rigorous evaluations (evals) throughout the agent lifecycle. It outlines various evaluation structures, types of graders, and the significance of early and continuous eval development. The piece highlights the challenges faced by teams without evals, which can lead to reactive development cycles. It also provides insights into different agent types and their evaluation techniques, ultimately advocating for a systematic approach to agent evaluation to enhance performance and reliability.

💭 Your Thoughts

This is very classic pros and cons for a new technology. You got the LLM's power to do things, but you need build complex evaluation system for it XD